(19)

(11)

EP 1 091 642 A1

(12)

(43) Date of publication: 18.04.2001 Bulletin 2001/16 (21) Application number: 99935413.7 (22) Date of filing: 02.07.1999

(51) International Patent Classification (IPC)7: A01K 11/00 (86) International application number: PCT/US9915/109 (87) International publication number: WO 0001/228 (13.01.2000 Gazette 2000/02)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 02.07.1998 US 109832 (71) Applicant: RITCHEY, Eugene B. Brighton, CO 80601 (US)	(72) Inventor: RITCHEY, Eugene B. Brighton, CO 80601 (US) (74) Representative: Harrison Goddard Foote  Tower House,Merrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)